A few mailing lists? I'd need to be on at least a dozen just to cover the things that could be on csa.apps instead. And that's just the ones I know about - another problem with mailing lists is that there's no central list of what's available.
One of the reason's the newsgroups are full of "off topic rambling" is because all the relevant stuff is on some mailing list somewhere!
Mailing lists are fine for low volume announcements, like the DiscKnight one (Is that still going? I lost track after it moved servers, yet another problem with them!), but a pain for general discussions among more than half a dozen people.
You haven't read my message properly - I do filter the mail, but that's no use when I'm not using my mail client to read it!
Of course, web forums are far worse